Liquid cooling plate with variable-diameter flow channel for battery

Abstract

The utility model discloses a liquid cooling plate with a variable-diameter flow channel for a battery, and relates to the field of battery temperature control, the liquid cooling plate comprises a bottom plate and a panel, the bottom plate is composed of a plurality of punching and folding parts welded side by side; a linear variable-diameter groove with a flat bottom surface is concavely formed in the punching and folding piece; a linear variable-diameter handle is sealed by a panel to form a linear variable-diameter channel; one end of the linear reducing channel is a small-diameter opening, the other end of the linear reducing channel is a large-diameter opening, the width of the large-diameter opening is larger than that of the small-diameter opening, and the inner diameter of the channel is increased from the small-diameter opening to the large-diameter opening. According to the liquid cooling plate, the variable-diameter flow channels are designed in the liquid cooling plate, so that the heat exchange area of cooling liquid can be effectively adjusted, and a more uniform heat exchange effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of battery temperature control, and in particular to a battery liquid cooling plate with a variable diameter flow channel. Background Art

[0002] The existing battery liquid cooling plate technology mainly adopts a straight channel or a folded channel structure. These channels usually have a consistent height in the liquid cooling plate and are evenly distributed in the entire area from the liquid inlet to the liquid outlet. This design has been widely used in industrial applications and has a certain cooling effect. However, with the development of cooling technology and the increase in demand, the shortcomings of these traditional designs have gradually emerged.

[0003] In a traditional liquid cooling plate, as the coolant flows from the inlet to the outlet, it continuously absorbs heat from the battery or other heat sources, causing the coolant temperature to gradually increase. Due to the uniform distribution of the flow channel, the coolant has a lower temperature when it enters the liquid cooling plate and has a higher heat absorption efficiency. However, when the coolant flows to the outlet, its temperature has increased significantly, and the heat exchange efficiency decreases accordingly. This design fails to fully consider the actual situation of the coolant temperature gradually increasing, resulting in uneven heat exchange efficiency for the entire liquid cooling system.

[0004] Specifically, as the coolant continuously absorbs heat and gradually heats up during the flow process, its heat absorption capacity will gradually weaken, resulting in unsatisfactory heat exchange in the subsequent flow area. This not only affects the overall heat dissipation performance of the liquid cooling plate, but may also cause local overtemperature, thus affecting the normal operation and life of the battery. In the prior art, the inner diameter size of the flow channel of the liquid cooling plate is consistent. Therefore, when faced with application scenarios with high heat flux density, the cooling effect of this design is obviously insufficient.

[0005] If the number of flow channels is increased near the liquid outlet, the flow resistance will increase significantly, and higher requirements will be placed on the pumping pressure of the external cooling system. For some products with higher cost requirements, adding flow channels is not applicable.

[0006] In view of the above problems, it is particularly important to develop new liquid cooling plate technology. Utility Model Content

[0007] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a battery liquid cooling plate with a variable diameter flow channel. The liquid cooling plate can effectively adjust the heat exchange area of ​​the coolant by designing a variable diameter flow channel in the liquid cooling plate, thereby achieving a more uniform heat exchange effect.

[0008] To achieve the above object, the present application discloses a liquid cooling plate for a battery with a variable flow channel, including a bottom plate and a panel. Among them, the bottom plate is composed of a plurality of punched and folded parts welded side by side; a straight variable-diameter groove with a flat bottom surface is recessed in the punched and folded part, and the straight variable-diameter handle is sealed by the panel to form a straight variable-diameter channel; one end of the straight variable-diameter channel is a small-diameter port, and the other end is a large-diameter port. The width of the large-diameter port is greater than that of the small-diameter port, and the inner diameter of the channel enlarges from the small-diameter port to the large-diameter port.

[0009] Further, at least one triangular flow disturbing block protrudes from the bottom surface of the straight variable-diameter channel in the middle of the straight variable-diameter channel.

[0010] Further, a silica gel sheet is attached to the bottom surface of the punched and folded part.

[0011] Compared with the prior art, the present application has at least the following beneficial effects:

[0012] 1. Improve the heat dissipation efficiency: The design of the variable flow channel enables the coolant to adjust the flow rate and flow path according to the different diameters of the flow channel during the process of flowing through the liquid cooling plate. Specifically, one end of the flow channel is a small-diameter port, and the other end is a large-diameter port. The design of gradually enlarging from the small-diameter port to the large-diameter port makes the flow rate of the coolant change from high to low. In this way, heat can be quickly removed in the small-diameter area with a high flow rate, while in the large-diameter area, the residence time of the coolant in the high-temperature area can be extended by reducing the flow rate, fully absorbing heat and improving the overall heat dissipation efficiency.

[0013] 2. Balance heat exchange: The design of the variable flow channel takes into account the actual situation that the temperature of the coolant gradually rises. By adjusting the width of the flow channel, the coolant has different flow rates in different areas, avoiding the problem of unbalanced heat exchange efficiency in the traditional uniform flow channel design and ensuring more balanced heat exchange in the entire liquid cooling system.

[0014] 3. Increase the flow disturbing effect: Triangular flow disturbing blocks are arranged in the middle of the straight variable-diameter channel, which can effectively increase the disturbance of the coolant, generate more turbulent flows during the flow of the coolant, and enhance the heat exchange effect. The existence of the flow disturbing blocks further increases the contact area between the coolant and the inner wall of the liquid cooling plate, enhancing the heat transfer efficiency.

[0015] 4. Reduce costs: The design of using punched and folded parts and silica gel sheets makes the manufacturing process of the liquid cooling plate simple and the cost low, making the liquid cooling plate more competitive in the market.

[0016] The beneficial effects listed above do not exhaust all the advantages. Other potential beneficial effects and detailed technical implementation manners will be further revealed in the embodiments or other description parts of the present application. Description of the Drawings

[0017] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present disclosure will be better understood. In the accompanying drawings, the positions, dimensions, ranges, etc. of the various structures shown sometimes do not represent the actual positions, dimensions, ranges, etc. In the drawings:

[0018] Figure 1 is a schematic structural view of an embodiment disclosed in the present application.

[0019] Figure 2 is a schematic structural view of the bottom plate in an embodiment disclosed in the present application.

[0020] Figure 3 is a schematic structural view of the bottom plate in another perspective in an embodiment disclosed in the present application.

[0021] Figure 4 is a schematic structural view of the bottom plate in yet another perspective in an embodiment disclosed in the present application.

[0022] Figure 5 is a schematic structural view of the punching and folding part in an embodiment disclosed in the present application.

[0023] Figure 6 is a schematic structural view of the punching and folding part in another perspective in an embodiment disclosed in the present application. Detailed Description

[0024] The present disclosure will be described below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0025] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be distorted.

[0026] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0027] As used in the specification, the singular forms "a", "the" and "said" include the plural forms unless clearly indicated otherwise. The terms "comprising", "including" and "containing" as used in the specification denote the presence of the claimed features, but do not preclude the presence of one or more other features. The term "and / or" as used in the specification includes any and all combinations of one or more of the related listed items. Embodiment

[0028] As Figures 1 to 6 shown, this embodiment relates to an exemplary structure of a liquid cooling plate for a battery with a variable flow channel, including a bottom plate 1, a panel 2 and a plurality of punching and folding parts 3. The bottom plate 1 is composed of a plurality of punching and folding parts 3 welded side by side. A flat linear variable diameter groove 8 is recessed on the bottom surface of each punching and folding part 3, and a linear variable diameter channel 6 is formed by sealing with the panel 2. One end of the linear variable diameter channel 6 is a small diameter port 4, and the other end is a large diameter port 5. The inner diameter of the channel gradually enlarges from the small diameter port 4 to the large diameter port 5, forming a variable diameter structure.

[0029] In the middle of the linear variable diameter channel 6, at least one triangular turbulator 7 protrudes from the bottom surface of the channel. The triangular turbulator 7 is used to increase the disturbance of the coolant during the flow process, generate a turbulent flow effect, and further enhance the heat exchange effect. In addition, a silica gel sheet is pasted on the bottom surface of the punching and folding part 3. The silica gel sheet not only improves the sealing performance, prevents the coolant from leaking, but also has the characteristics of high temperature resistance and corrosion resistance, ensuring the long-term reliable operation of the liquid cooling plate.

[0030] Specifically, the bottom plate 1 is formed by welding a plurality of punching and folding parts 3 side by side to form an integral structure. These punching and folding parts 3 are connected together by a welding process, ensuring the strength and stability of the bottom plate 1. The design of the bottom plate 1 takes into account the flow path of the coolant, and a linear variable diameter groove 8 is recessed to form a linear variable diameter channel 6 by sealing with the panel 2. The panel 2 is fixedly connected to the bottom plate 1 through a sealing process to ensure that the coolant does not leak during the flow process.

[0031] The punching and folding parts 3 are processed by a standardized stamping process. This process has the advantages of high efficiency and low cost in industrial production. First of all, the stamping process can produce punching and folding parts in large quantities, significantly reducing the unit production cost. Secondly, the stamping process equipment is simple, easy to operate, and has a short production cycle, further reducing the production cost. In addition, the stamping process can accurately control the size and shape of the punching and folding parts, ensure the quality of each punching and folding part is consistent, and reduce the waste and cost increase caused by defective products.

[0032] During the flow of the coolant, it first enters the small-diameter orifice 4 area of the linear variable-diameter channel 6 from the liquid inlet. Since the flow channel of the small-diameter orifice 4 is relatively narrow, the flow velocity of the coolant is relatively high, which can quickly carry away the heat generated by heat sources such as batteries. As the coolant flows towards the large-diameter orifice 5 area, the flow channel gradually widens, and the flow velocity of the coolant decreases, thereby prolonging the residence time of the coolant in this area and enabling it to fully absorb heat. The triangular turbulator 7 provided in the middle of the linear variable-diameter channel 6, by increasing the perturbation of the coolant, causes more turbulence to be generated during the flow of the coolant, further enhancing the heat transfer effect.

[0033] Through the above design, the liquid cooling plate of the present invention can significantly improve the heat dissipation efficiency of the battery, extend the service life of the battery, and since the flow velocity and temperature change of the coolant in the entire flow channel are reasonably controlled, the situation of local overheating is avoided. In addition, the design of the variable-diameter flow channel makes the liquid cooling plate have a relatively low cost during the production process, is suitable for large-scale industrial production, and has good market application prospects.

[0034] For example, in an electric vehicle battery cooling system, the liquid cooling plate can effectively solve the problem of a large amount of heat generated when the battery pack discharges at high speed, ensure the temperature control of the battery pack during high-load operation, and thus improve the performance and safety of the electric vehicle. At the same time, in the cooling system of high-performance computing devices, the liquid cooling plate can also provide an efficient heat dissipation solution, ensure that the device maintains a stable operating temperature during long-term high-intensity operation, and improve the operating efficiency and life of the device.

[0035] In summary, through the reasonable design and configuration of the bottom plate 1, the panel 2, the stamping and folding part 3, the small-diameter orifice 4, the large-diameter orifice 5, the linear variable-diameter channel 6, the linear variable-diameter groove 8, and the triangular turbulator 7, the liquid cooling plate achieves an efficient and balanced heat transfer effect, and has significant technical advantages and practical application values.

[0036] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without substantially departing from the spirit and scope of the present disclosure. Therefore, all changes and modifications are included within the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A battery liquid cooling plate with a variable diameter flow channel, characterized in that: include: A bottom plate and a panel, wherein the bottom plate is composed of a number of folded parts welded side by side; the folded parts are concavely provided with a linear diameter-changing groove with a flat bottom surface, and the linear diameter-changing handle is sealed by the panel to form a linear diameter-changing channel; one end of the linear diameter-changing channel is a small-diameter opening, and the other end is a large-diameter opening, the width of the large-diameter opening is greater than that of the small-diameter opening, and the inner diameter of the channel increases from the small-diameter opening to the large-diameter opening.

2. A battery liquid cooling plate with a variable diameter flow channel as claimed in claim 1, characterized in that: At least one triangular spoiler is protruding from the bottom surface of the linear variable diameter channel in the middle of the linear variable diameter channel.

3. A battery liquid cooling plate with a variable diameter flow channel as claimed in claim 1, characterized in that: A silicone sheet is attached to the bottom surface of the punching and folding piece.

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